Heinrich kempkens



(No Model.)

H. KEMPKENS. PRESS FOR PRESSING CHEESE, 8w.

Patented (Ian. 3, 1893.

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HEINRICH KEMPKENS, OF GREFRATH, NEAR GREFELD, GERMANY.

PRESS FOR PRESSING CHEESE, 80.

SPECIFICATION forming part of Letters Patent No. 489,151, dated January3, 1893.

Application filed March 10, 1892.

To all whom it may concern.-

Be it known that I, HEINRICH KEMPKENS, a subject of the Emperor ofGermany, residing at 82 Rosen strasse, Grefrath, near Orefeld, inGermany, have invented a certain new and useful Improvement in Presses,of which the following is a specification.

This invention relates principally to presses used for pressing cheesebut it is applicable to presses for other matters. One of the suitablyshaped forms or plates between which the cheese or matter is to bepressed is vertically adjustable 011 a screw threaded spindle and theother of these forms or plates is at tached to a longitudinally movablespindle by which the pressing is performed by spring pressure. Thespindle is lifted by a strap wound upon a drum by the rotation of theshaft of the drum by hand or otherwise. This action unwinds a secondstrap attached at one end to the spindle, from a second drum, andconsequently revolves this second drum with its shaft. The latter shaftcarries a cam or irregularly shaped disk or drum, on the periphery ofwhich a third strap is fastened the other end of this strap beingconnected to a spiral spring of suitable power. By the revolution of thecam, due to the lifting of the spindle, the spring is brought intotension and reacts to press down the spindle when a ratchet wheel on oneof the shafts is released from a pawl so as to allow the parts to returnto their first position. The shape of the cam causes the spring to actmore forcibly, that is to say, to press the forms or plates moreforcibly together as they approach the one to the other. An indicationof the power of the press may be had by arranging on the shaft of thecam an indicating finger and on the casing asuitable scale previouslymarked according to the pressure to which the various positions of theindicator correspond. It is obvious that ropes, cords, or chains maybeused instead of straps.

The accompanying drawings illustrate a pair of such cheese presses onone frame. Figure 1 being a front elevation partly in section and Fig. 2a vertical section on line 2 a Fig. 1.

The lower form 0 rests in the plate 19 at the head of the screw-threadedspindle 19 The upper form n is subjected to the downward pressure of therod 19 which terminates below in a plate p. A cylindrical case msurrounds Serial No. 424,472. (No model.)

the forms 0. n. The strap 0 fastened at its lower end to the rod 19 iswound upon the drum 6 on the shafts: of which is the crank handle Z forwinding up the strap by hand and the ratchet wheel 01 which inconjunction with the pawl e prevents the strap from unwinding. The straph which is fastened at its upper end to the rod 10 is wound upon thedrum f on the shaft y which carries also the irregularly shaped disk g.On this disk 9 is wound the strap c' the other end of which is connectedto the one end of the spring 70, the other end of this sp ringbeingsuitablysecured to the framework A of the press. The direction ofwinding of the several straps c h t' is such that the raising of the rodp brings the spring is into tension.

The invention more particularly relates to the disk g. This disk is ofsuch ashape that the radial distance of the strap 11 at the point whereit leaves tangentially the contour of the disk increases as the rod 12is the more depressed, this radial distance is therefore least when therod 19 is in its highest position as on the right of Fig. 1 and greatestwhen the same is in its lowest position as on the left of Fig. 1. Thismay be effected by making the periphery of the disk 9 for the greaterpart of its length in a curve, such as a volute.

It is intended that the increase in leverage obtained by the increasingradial distance aforesaid shall more than compensate for the diminutionin pressure of the spring 7.: as it approaches its normal position, sothat the effective pressure between the disks 4?. 0 may increase as theyapproach the one to the other.

The indicator t on the shaft y shows the position of the shaft y and inconnection with the dial t suitably numbered indicates the pressureproportional for that position. The pressures may be found byexperiment.

I claim 1. In a press the combination of a pressure rod 19 a drum fconnected to said rod, and adapted to move the same when rotated, anirregular shaped disk g on the shaft of said drumf a spring 7t and astrap 2' wound upon the periphery of the disk 9 and attached to saidspring whereby the spring operates said rod 19 with a pressureincreasing in proportion to the radius of the disk g for the purpose setforth.

2. In a press, the combination of the rod 9 the drum f, the strap hconnected to said rod and Wound upon drum f a drum 1), a second strap 0wound on said drum 1) and connected to said rod, a crank handle I andratchet wheel cl on the shaft of said drum 1), an irregular disk 9 onthe shaft of drurnf a spring 70 and a strap iconnected thereto and woundon said disk 9 substantially as and for the purpose set forth.

3. The combination in a press of an adjustable platen p a pressure rod12, straps c and it connected thereto, drums b and f on which saidstraps are respectively wound, irregular disk g, strap t' and spring 70,an indicator t on the shaft of disk 9 and dial 2?, the Wholesubstantially as and for the purpose set forth.

In witness whereof I have signed this specification in presence of twowitnesses.

HEINRICH KEMPKENS. Witnesses:

YORKUB SOHETTER, GOTTFRIED PoscH.

